Dwight Howard has so far been confined to cheering on the Lakers in the preseason. (AP)

"He is making progress," one Lakers source told Yahoo! Sports. "There is a good chance he can play Sunday."

Howard has been sidelined since having surgery in April to repair a herniated disk. He's not expected to play against the Kings on Friday in Las Vegas. The Lakers would like Howard to play in two of their three remaining preseason games after Friday, sources said. But they're hesitant to play him in both games of a back-to-back Wednesday and Thursday.